Alarm-clock.



G. y ALAELB SLO 2K.

.PLGiTION FILED JUL-, 1938,

3 HERES-SHEET {NVENTOR @mfg (i SHQ ATTORNEY imrnn entras Mra.rinviortica.'

GEQRGE KERN, PER-U, ILLIN 01S. SSIGNOR '10 THE WESTERN-T CLOCK Mi' NUFAGTRING CMPANY, QF LA SALLE, ILLIN 01S, A .CORPORATION Oll XLLINOS.

Lann-omen.

Specification vof Letters Patent.

Patented Nov` 17', 1908.

Application .Gle-d July 1,' 1908. Serial No. 441,387.

for -a long period ot' time, or can be made to sound intermittenti sirable.

It further consists incertain details of construction and combination of parts. for removingithe usual frictional drag of the repeating mechanism from the time train of the clock, and has for itsobject the productionof a simple and extremely, reliable alarm mechanism, thereby, producing an alarm clock of the class described which will keep accurate time. i

ln the drawings Figure 1 -shows a front as may he found deview of a clock movement having parte of' the front plate out away, showing my invent-ion. Fig. 2 is a top view of said movement. F 3 is a view with plate in section along aline A-B, showing the position of the repeating and manipulating lever .when said lever is held out of engagement with the repeating wheel b T the time movement. Fig. fl is a. view wit plate in section along a line A-B showing the osition of' the repeating and manipulating ever when it is in engagement with the repeating wheel. Fig. 5 is a front View of the repeatin and manipulating lever. Fi 6 is r. si e view of the repeating and manipulating lever. F ig. Z is an enlarged front view of a clock movement, partly out away, more clearly showing my invention. lFig. 8 is a section at right angles to Fig. 7, along a `line through the shaft 21.

In the dra-wines, 1 represents the front `plate and 2 the ack plate of amovement using my invention. Mounted between these plates onthe shafts shown are the time main l .the center wheel 4., 'the third wheel 5, the ourth wheel 6, which Vform a part of the time train, and the alarimain wheel 7 with the alarm main spring 10, the intermediate whecl 8E and the alarm escape wheel 9, which comprise the alarm train of an ordinary alarm clock.

Mounted on a shaft 12 and engaging with the teeth of escape wheel 9 is the hammer verge 11. The hammer verge 11 has' an erm 13 which is pivotally connected ,to one ein'l yo t a link 14. vThe other end of linlr 14 is pivotally connected to the hammer lever 15, one of whose ends is journaled on a pin 16 fastened in the plates. The other end of said lever carries the hammer 17. Mounted on shaft 12 is a stop lever 18 into 'whose path a projection 29 from the end oi' o spring 19 enters; the other end of'said epm is fastened to the front plate at 20. Through apertures in said spring 19 and the movement plates 1 and 2, passes the handset arbor 21 having a cam with a projecting finger 22 fastened to it. Between said springl) and said cam with finger 22, is mounted the trip wheel 23 which carries the trip com 2i on which said projecting finger 22 rides and clauses saidltrip Wheel .23 and spring 19 to move away from and toward the movement plate, andthe end of said .spring to move into and out of the path ofsaid lever 18. (See Fig. 3 and Fig. 4 respectively.) lWhat I have described above is similar to the mechanism used in all alarm clocks.

Mounted on the shaft of the third wheel 5 is a re eating wheel 25 whose'teeth engage with t e side projectionl of a repeating lever 26. Said' lever 26 is journaled on a pin 27 fastened in the front plate 1. The end of said repeating lever 2G has a side projection or pin 31 which engages the teeth ot the repeating wheel 25 and a projection 28 near its upper end which. engages and locks the. stop lever .18 against further motion when said lever 1361's in the position shown in solid lines in Figjl, having its lower projection 31 beto-'een the teeth ofthe repeating wheel 25. As repeating wheel 25 rotates, the pro-, jection 3l rides one of the teeth and the lever 26 moves toward (but does not reach) the dotted posit-ion shown in Fig. 1 and releases the stop lever 18 so it is free to vibrate towards its dotted position shown .in Fig. 1. When the lever is in the position shown in solid lines and as just described, the cloclr is a repeating alarm clock. Repeating lever 26 also has an elongated aperturei, into which projects a pin ilwhich limits the flier tance which said lever-may travel.

The alarm releasing spring 19 above mentioned also has another projection 39 which has an inclined face which engages saidrethe said time movement, the

ating lever 26 and forces its lower end pro'- jection out of engagement with the teeth of the repeating Wheel Whenever-said spring 19 is moved toward the front plate as above described (see Fig. 1). Said repeating lever 26is again-brought into its previousiposition of en agement withthe teeth of repeat- 1ng-`whe`e 25 VWhenever the spring 19 is' 'moved away from the frfnt plate. The time movement accomplishes hisof itself, for as the trip. wheel 23 is rotated by the train of ger 22 presses the trip cam .and spring toward` the plate as above described, and the time train is free fromthe drag of repeating lever` 2G, which is held in engagement with the repeating wheel 25 bymeans of a spring which is fastened to the plate 1 and to projection 30 on said lever26 and is not shown in thedrawings. When the lever 26 is held inthe posi tion shown .by the dotted lines in Fig. 1 by means v'vhich will be described` belowg' the alarm-Will ring continuously ,or will be a long alarm, as it is usually designated. The lever 26, when it is desired, can also be held in the dotted position shownin Fig. 1 by Y the followin means, instead of those above Fig. 1, the clock 1s a repeating alarm clock as above described, and when member 35 is in its extreme left position (bringino' the lever 26 tothe osition shown in the dbtted lines in Figfli) the clock is a long alarm clock. v

From the above description, it isevident that my alarm can be used as a long alarm or a repeating alarm clock, that it is a very simple and inexpensive mechanism, that the drag of the repeating lever is removed from the time train b the time movement itx-sit, thus making a c ook of this class capablil of keeping accurate time. And further, that when 1t is set to be used for a long alarm clock, the drag of the repeating lever is also removed from the time train and thatJ the entire result is accomplished by means of a sin le repeating lever.

claim:

1. In an alarm clock, the combination of a repeating wheel mounted on an arbor of the time train, a pin fastened in the movement plate, a stop lever mounted on the hammer shaft of the alarm mechanism, an independent lever journaled on said pin, a projection on said lever which engages the teeth of the .repeating wheel, and a projection on said lever which enters the path of said stop lever and intermittently obstructs said path, and

.an alarm releasing spring actuated by .the

.time train,a pin fastened' to the movement plate, a lever journaled on said pin, a projection on said lever which engages the teeth of said repeating Wheel, another projection- Y on said lever'Which enters the path of said stop lever and intermittently locks it against vibration, a projection on saidspring which enters the pathof said stop lever and another projection on said spring which has anVv inclined face co-acting with said lever, substantially as shown and described.

3.r In an alarm clock, the combination of a.

timetrain and an alarm train, a repeating wheel mounted on a shaft of the time train, a stop levermounted on the hammershaft, an alarm releasing spring actuated by the time train, a pin fastened to the movement late, a lever .journaled on said pin, a projection on said lever Which engages the teeth' of said repeating Wheel, another projection on said lever which enters the path of said stop lever and intermittently locks it against vibration, a projection on said spring which enters the path of said stop lever and an-- other projection on said spring which has an inclined face co-acting with said lever, and means external to and independent of- -the movement for actuating said lever and maintaining it out of engagement With the repeating Wheel.

4. In an alarm clock, the combination of a repeating whe-al mounted on an arbor of the time train with fn independent lever, capable of being manually7 operated externally to the case of said clock, a stop lever mounted on the hammer shaft of the alarm train, a projection on said independent lever which engages the teeth of the repeating Wheel, another projection on said'lever which enters the path of' .time train with an independent lever, capable of being manually operated and positioned externally to the case of said clocg'a,

seht lever, `ca

stv-op lever monnted on the hammer shaft of the alarm tram, a projection on said independent lever which engages theteeth of the repeating wheel, another projection on said' lever which enters the path of said stop 1ever, an alarm releasing spring actuated by the time train', said spring havingl one proection which enters the pathof saidfstop everand another projectlon having an inclined face co-acting with said independent leverysub'sta tially as shown and described.

6. In an a arm clock, a repeating Wheel mounted on anarbor of the time train, a pin fastened to a movement plate, an independpable of being manually-operated and poslt-ioned externally to the case of ver which enters thepath of said stop lever intermittently locking it against Vibration, an alarm releasing spring havin a projection which elitersthe path of sai stop lever and another projection having an-inclined face cofacting with saidI lever.

GEORGE KERN.

Witnesses :i

C. L. SAMSON, WILLIAM A. RADTKE. 

